#===============================================================================
# Copyright 2011 Jake Ross
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#===============================================================================



#============= enthought library imports =======================
from traits.api import  Float
#from traitsui.api import View, Item, Group, HGroup, VGroup

#============= standard library imports ========================

#============= local library imports  ==========================
from src.spectrometer.spectrometer_device import SpectrometerDevice

class Source(SpectrometerDevice):
    nominal_hv = Float(4500)
    current_hv = Float(4500)

    def read_hv(self):
        if self.microcontroller is None:
            r = 4500

        else:
            r = self.microcontroller.ask('GetHighVoltage')
            try:
                r = float(r)
            except:
                r = self.nominal_hv

        self.current_hv = r
        return r
#============= EOF =============================================
